Sorry to keep you waiting Roxy... I have never owned a piece of McIntosh gear, not that I wouldn't because it is "good" gear. I also have never owned Gryphon (it is not available in the United States), but I have listened to both on many occasions and in the same system.
I heard the McIntosh MC501 mono blocks and the Gryphon Antileon Signature Stereo amplifier in the same system driving a pair of Wilson Sasha's. In my opinion (which I am entitle to last time I checked) and the 4 others in the room - there was no comparison, the Gyphon was in another league... Just like lrsky mentioned above.... But, the Gryphon cost 3 times more than the McIntosh, so it may not be a fair comparison taking in consideration the cost difference.
If you can't hear the difference, it's not all bad. You will save a lot of money..
Everyone has their preference and you are obviously proud of McIntosh. For the money it is very good stuff, just not in the same league as Gryphon (in my opinion).
Happy Listening